US3456306A - Slide fastener with continuous coupling element - Google Patents

Slide fastener with continuous coupling element Download PDF

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Publication number
US3456306A
US3456306A US675697A US3456306DA US3456306A US 3456306 A US3456306 A US 3456306A US 675697 A US675697 A US 675697A US 3456306D A US3456306D A US 3456306DA US 3456306 A US3456306 A US 3456306A
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United States
Prior art keywords
coupling element
threads
coupling elements
thread
coupling
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Expired - Lifetime
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US675697A
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English (en)
Inventor
Helmut Heimberger
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Opti Holding AG
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Opti Holding AG
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    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/24—Details
    • A44B19/40—Connection of separate, or one-piece, interlocking members to stringer tapes; Reinforcing such connections, e.g. by stitching
    • A44B19/406—Connection of one-piece interlocking members
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2518—Zipper or required component thereof having coiled or bent continuous wire interlocking surface
    • Y10T24/2527—Attached by stitching
    • Y10T24/2529—String or stringer tape having distinctive property [e.g., heat sensitive]

Definitions

  • thermoplastic helicoidal or meandering coupling element is attached to a stringer tape with the aid of a fillet cord flanking the coupling element and/or a core cord extending through the coupling element and with thermoplastic threads (e.g. in a chain stitch) extending along the coupling element and thermally fused to bond a plurality of loops together, to bond the loops to the coupling element and/ or to bond the loops to the cords.
  • My present invention relates to improved slide-fastener structures and, more particularly, to a slide-fastener structure wherein a pair of stringers, support tapes or bands are formed along their confronting edges with matingly interengageable continuous coupling elements having complementarily spaced heads which interengage upon movement of a slider along these coupling elements; more particularly, this invention relates to slidefastener assemblies using so-called meandering or helicoidal coupling elements.
  • continuous coupling elements of the meandering or helicoidal type permit improved, snagfree, washable, drycleanable and pressable fasteners to be produced without difliculties which have hitherto been encountered with coupling elements consisting of spaced-apart members individually fastened to an edge of a stringer tape.
  • the continuous coupling elements are generally formed of molecularly oriented filamentary synthetic resin material of a thermosetting or thermoplastic type in which the heads of the coupling elements are formed by thermal deformation with a predetermined spacing along the continuous filament.
  • helicoida is used herein to refer to coupling elements in which the filament, usually a nylon-type polyamide, is coiled in a multiplicity of generally similar turns, such coupling elements being usually formed on a mandrel and being thermally deformed by pressing devices or the like after having been wound on this mandrel.
  • the crosssection of the elongated coupling element may be eliptical, circular or any oval configuration and the turns may include mutually parallel and coplanar shanks connected by the coupling head, with the shanks of each head being connected with the adjacent shanks by bight portions bridging the turns.
  • the heads are provided with lateral protuberances which engage below the corresponding protuberances of the mating heads and interfit with the turns of the opposing coupling element.
  • Meandering coupling elements can be described as continuous elements of filamentary thermoplastic or other synthetic resin (usually nylon-type polyamides), of the molecularly oriented kind, which have been deformed into a multiplicity of similar undulations which may be disposed on one side of the stringer tape, may pass alternately back and forth from one side of the tape to the other, or may simultaneously bridge the opposite surfaces of the stringer. Again, the undulations usually have "ice bight portions which connect the heads and are secured to the stringer tape.
  • Typical helicoidal slide fasteners are described in US. Patents No. 3,267,514 and 3,243,489, as well as in my commonly assigned copending application Ser. No. 544,487. Meandering coupling elements are illustrated and described in Patent No. 3,255,504.
  • Slide fasteners using meandering or helicoidal elements have been proposed in a number of configurations and, indeed, it has been suggested to cement coupling elements to the respective stringer tapes, to attach the coupling elements to stringerfoils by thermal welding, to enclose the coupling elements in woven sleeves of the stringer tapes and to sitch them to the latter.
  • the means for securing the coupling element to the stringer simultaneously acts as protection for the bight portion of the coupling element which otherwise might be subjected to wear from the slider or devices for treating the fabric or the like.
  • Conventional techniques of this character have not been fully satisfactory because of breakage of the stretches and/or core, because of the high frictional obstructions to the slider introduced by such fastening means, the variability in the character of the fastening device with washing and the like.
  • Another object of my invention is to provide a slide fastener assembly in which the means for aflixing the coupling element to the stringer tape of each slide fastener half is capable of withstanding the stresses to which it is subjected to a greater extent than heretofore.
  • thermal fusion and formfitting relationship or expressions of similar import are used generally hereinafter, they are to be understood to refer to systems in which the attaching threads are in surface contact with one another, with a continuous cord or filler bead of thermoplastic material running through or along the coupling elements in a conventional manner and composed of a thermally Weldable synthetic resin according to the present improvement, and/or with the helicoidal or meandering coupling elements which are composed of continuous filamentary thermoplastic material; the threads are bonded along the surface in such contact with one another, to the slider-guide head or fillet, to the core running through the coupling element and/or to the coupling element itself in the region in which these threads engage the shanks.
  • the expression formfitting is intended to include the concept of integrating the material of the thread with the material of the body to which the thread is thermally bonded (i.e. another thread of the stitching, another convolution, loop or stretch of the same thread, the bead or fillet, the core and/or the coupling element), the integration forming substantially a mono lithic structure at the thermal weld of the type characterizable as a flowing together of the thermally welded materials, an interditfusion or interpenetration thereof and the like. All of these conditions are intended when the expression thermal welding is used hereinafter in conjunction with expressions relating to integration of the thread materials with the body to which they are bonded.
  • the resistance of the slide fastener to washing and dry-cleaning stresses is increased.
  • the thermal welding of the loops of the fasten ing stitches on or adjacent the coupling elements, which are composed of thermally fusible synthetic resin, can be carried out in various ways in accordance with the instant invention.
  • a heating device may be used to fuse the stitches which comprises a number of relatively small localized heating elements spaced apart in accordance with the distribution of the threads and the welds which engages the slide-fastener half as it is displaced after stitching.
  • a relatively simple technique involves the use of a radial heating device or a dielectric heater which fuses the free loops of the thread and forms from them thickenings or bulges, thereby shrinking the thread loops about the fillet or coupling element and produces a ridge along which the slider can ride.
  • the threads are integrated with another and thermally fused to the coupling elements or core as may be desired.
  • General heating techniques may be used, however, since the thickness of the threads is substantially less than that of the attaching cords or coupling elements so that the thermoplastic threads flow before the coupling elements and attaching cords have been heated sufiiciently. The portions of the threads within the cords remain unaffected by the heat which cannot damage the coupling elements.
  • inductive heating may be used to cause fusion and flowing of the threads at the locations at which they contact the metal element. Gas-flame heating may also be employed.
  • FIG. 1 is a perspective view of a slide fastener embodying the present invention
  • FIG. 2 is a cross-scectional view along the line II-II of FIG. 1 showing the means for heating the threads in diagrammatic form and drawn to an enlarged scale;
  • FIG. 3 is a cross-sectional view similar to FIG. 2, illustrating another embodiment
  • FIG. 4 is a cross-sectional view taken along the line IVIV of FIG. 1;
  • FIG. 5 is a plan view drawn to an enlarged scale and with parts removed showing the relationship between the chain-stitch threads and the coupling elements;
  • FIG. 6 is a view similar to FIG. 5 showing the relationship of the coupling elements and attaching threads after thermal bonding;
  • FIG. 7 is a cross-sectional view similar to FIG. 4 illustrating another aspect of this invention.
  • FIG. 8 is a view similar to FIG. 6 of another modificatron.
  • FIG. 1 of the drawing I show in diagrammatic form a slide fastener 10 which comprises a pair of slidefastener halves 10a and 10b each having a respective stringer tape 2 of fabric and provided with a respective coupling element of the meandering or helicoidal type represented in 1.
  • the coupling elements may be composed of molecularly oriented synthetic resin and are attached to the stringer tapes 2 as described, for example, in connection with FIGS. 2 and 4-6. Flanking the coupling elements 1, which may have the configuration illustrated in any of the aforementioned patents or application, are a pair of fillet cords 4 which protect the outer edges of the coupling elements and guide a conventional slider (not shown) therealong.
  • the coupling elements 1 are retained on the stringer tapes 2 by stitching 3 through the cords 4 flanking these coupling elements which are here shown to be in their interengaged condition.
  • the threads 3 of the stitching along the left-hand slider half are thermally melted down and welded together to form thickenings 5a by a gas flame 11 from a torch 12 at the localities at which such thickenings are desired.
  • the stitching threads 3 are thermally fused together and melted down by an infrared heater represented at 13 to form the thickenings or condensed portions 5b along the upper surface of the respective fillet cord 4.
  • the fillet cords 5 are here shown to be of thermally fusible thermoplastic material which merge with the threads 3 at the thickenings 5a or 5b and are integrated therewith.
  • the stitching 3 may be a doublechain stitch, vamping stitch or the like having one or more loops bonded together by thermal welding as indicated previously. When a number of stitches are provided, it may be desirable to make use of nonthermally fusible threads for some of these loops and thermally fusible threads for others.
  • the thread loops of thread 3a in FIGS. 4-6 may be composed of cotton while the thermally condensed and fused thread loops are composed of the thermoplastic material (e.g. polyamide or polyester resin).
  • the stitches 23 pass through cores 24 Within the helicoidal coupling elements 21 on the stringer tapes 22.
  • FIGS. 46 the relationship between the different stitches can be seen.
  • the upper thread 3a and the lower thread 3b attaching the couple elements 31 to the stringer tapes 32 are composed of cotton and thermoplastic material respectively, the stitch being illustrated at the left-hand side of FIG. 4 while, at the righthand side of this figure, the tightened stitches are shown securing the core 34 within the helicoidal coupling elements.
  • the lower thread 3b forms the upper surfaces of the slide fastener and is heated (e.g. by the means illustrated in FIG. 7) to condense the threads 3b and form from the loops thereof the locking elements 6 which (compare FIGS. 5 and 6) are thermally bonded to the coupling elements 31 at 38 and retain the nonthermally fusible threads 3a in place.
  • the locking elements 6 are here shown to be formed as eyes through which the threads 3a pass.
  • the thermally fusible threads 43:: and 43b are both composed of thermoplastic material and form a chain stitch retaining the coupling element 41 on the tape 42, a thermoplastic core 44 extending through the coupling element.
  • Individual resistive heaters 49 carried by a support 49a and spaced apart in accordance with the spacing of the turns of the coupling element are brought into contact with the threads 43a and 43b and heat them to the flow condition, at which temperature the thermoplastic threads merge at 48 with the coupling elements, at 48a with the synthetic-resin core 44 and with each other at the thickened portion 48b.
  • the support 49a is displaced by a drive 4% into and out of engagement with the slide fastener which is stepped in the direction of arrow 49c.
  • FIG. 8 I show an arrangement wherein synthetic-resin loops 46 are formed by thermal welding and condensation of one set of fastening threads and are bonded to the coupling elements at the upper surface thereof while anchoring the lower threads 53 which may pass through the tape and around the other shank of each coupling element to lock these threads in place.
  • a slide-fastener structure comprising a stringer tape, a continuous-filament coupling element having a multiplicity of convolutions of thermoplastic material extending along an edge of said tape for mating interengagement with a complementary coupling element upon movement of a slider therealong, and means including a thermally fusible thread of a thermoplastic resin extending along said coupling elements for securing same to said tape and having a multiplicity of thread loops passing between said convolutions and in contact therewith, said thread loops being thermally welded unitarily with said convolutions at regions of contact therewith to hold said convolutions in place in the slide-fastener structure.
  • a slide-fastener structure comprising a stringer tape, a continuous coupling element having a multiplicity of convolutions extending along an edge of said tape for mating interengagement with a complementary coupling element upon movement of a slider therealong, and means including a thermally fusible thread of a thermo plastic resin extending along said coupling elements for securing same to said tape, said thread being thermally fused in place in the slide-fastener structure, said thread forming part of a double-chain stitch consisting of an upper thread and a lower thread, said lower thread being composed of thermally fusible material and being thermally fused so as to form locking elements in the form of annular eyelets retaining said upper thread.
  • a slide-fastener structure comprising a stringer tape, a continuous coupling element having a multiplicity of convolutions extending along an edge of said tape for mating interengagement with a complementary coupling element upon movement of a slider therealong, and means including a thermally fusible thread of a thermoplastic resin extending along said coupling elements for securing same to said tape and having a multiplicity of thread loops passing between said convolutions, said thread loops including two loops assigned to each convolution thermally welded unitarily together at regions of contact therewith to hold said convolutions.

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  • Slide Fasteners (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US675697A 1966-10-15 1967-10-16 Slide fastener with continuous coupling element Expired - Lifetime US3456306A (en)

Applications Claiming Priority (1)

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DEO12025A DE1289346B (de) 1966-10-15 1966-10-15 Reissverschluss

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US (1) US3456306A (xx)
AT (1) AT291151B (xx)
BE (1) BE703951A (xx)
DE (1) DE1289346B (xx)
DK (1) DK124918B (xx)
NL (1) NL6712694A (xx)
NO (1) NO119295B (xx)
SE (1) SE309128B (xx)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783476A (en) * 1971-10-13 1974-01-08 Opti Holding Ag Slide fastener stringer with stitched coupling element
FR2390123A1 (fr) * 1977-05-10 1978-12-08 Yoshida Kogyo Kk Bande d'accouplement de fermeture a glissiere
US4187591A (en) * 1976-07-12 1980-02-12 Yoshida Kogyo K K Continuous slide fastener stringers
NL7908807A (nl) * 1978-12-07 1980-06-10 Yoshida Kogyo Kk Ritssluitingdraagband.
US4319387A (en) * 1978-12-21 1982-03-16 Yoshida Kogyo, K.K. Slide fastener stringer
US5596793A (en) * 1995-02-21 1997-01-28 Davis; Gary T. Abrasion resistant slide fastener
EP1005803A2 (en) * 1998-10-30 2000-06-07 Ykk Corporation Coil-type slide fastener
US6427294B1 (en) * 1999-04-30 2002-08-06 Ykk Corporation Waterproof slide fastener and manufacturing method thereof
US6516499B2 (en) * 1999-12-27 2003-02-11 Ykk Corporation Linear slide fastener and manufacturing method thereof
US20040045140A1 (en) * 2002-09-09 2004-03-11 Morito Co., Ltd. Slide fastener
US20050257350A1 (en) * 2002-06-20 2005-11-24 Ykk Corporation Stop section for slide fastener, and slide fastener having such stop section
US20120110795A1 (en) * 2009-07-07 2012-05-10 Ykk Corporation Slide Fastener
US20130174767A1 (en) * 2010-09-29 2013-07-11 Ykk Corporation Fastener Stringer Provided with Knit Tape
US9986846B1 (en) 2013-10-11 2018-06-05 Ideal Fastener Corporation Slide fastener
US10426232B2 (en) 2013-07-01 2019-10-01 Raw Ip Limited Zip fastener

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1908068C2 (de) * 1969-02-18 1983-12-29 Hans-Ulrich 5408 Nassau Sohr Reißverschluß
DE102006045246B3 (de) * 2006-09-26 2008-01-24 Ries Gmbh Bekleidungsverschlussfabrik Verwaltungsgesellschaft Reißverschluss, Artikel mit einem Reißverschluss sowie Schieber für einen Reißverschluss

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US2018099A (en) * 1933-08-08 1935-10-22 Hookless Fastener Co Separable fastener
US2353960A (en) * 1942-03-24 1944-07-18 Ernest J King Sewed connection
US2497821A (en) * 1945-02-16 1950-02-14 United Carr Fastener Corp Slide fastener
CA514934A (en) * 1955-07-19 S. Bell Angus Textile operations and articles
US2901803A (en) * 1955-06-29 1959-09-01 Opti Werk Gmbh & Co Slider for helical-wire slide fastener
US2994631A (en) * 1956-06-06 1961-08-01 Bemis Bro Bag Co Method of forming stitched end closures for paper bags
DE1130263B (de) * 1955-02-12 1962-05-24 Messerschmitt Ag Verfahren zur Erzeugung einer Pseudodoppelsteppstichnaht und Maschine zur Durchfuehrung des Verfahrens
US3147529A (en) * 1960-05-09 1964-09-08 Walter Erich Heilmann Coil fastener
US3333305A (en) * 1965-11-01 1967-08-01 Scovill Manufacturing Co Terminal portions of plastic filament zippers

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DE1071616B (xx) * 1959-12-24
GB597241A (en) * 1945-04-20 1948-01-21 Ernest Leslie Greenwood Improvements in sewing textile materials
US2514197A (en) * 1946-06-20 1950-07-04 Firestone Tire & Rubber Co Splicing thermoplastic monofilaments
DE846915C (de) * 1950-01-08 1952-08-18 Lorenz C Ag Verfahren zum Verbinden thermoplastischer Folien mit artfremden Werkstoffen nicht thermoplastischer Eigenschaft
DE821843C (de) * 1950-10-13 1951-11-22 Telefunken Gmbh Verfahren zur Herstellung einer luftdichten Verbindung zwischen zwei Folien, die zumindest teilweise aus thermo-plastischem Kunststoff bestehen
DE857590C (de) * 1951-06-05 1952-12-01 Telefunken Gmbh Verfahren zum Befestigen von Knoepfen an Kleidungsstuecken aus thermoplastischen Kunststoffen mittels Erwaermung, insbesondere dielektrischer Hochfrequenz-Erwaermung
DE926582C (de) * 1953-09-05 1955-04-21 Klepper Werke Gewebestoffbahnen verbindende Fadennaht und Verfahren zu ihrer Herstellung
DE949796C (de) * 1953-11-29 1956-09-27 Dr Fritz Brandt Verfahren und Mittel zum Befestigen von Knoepfen an Knopftraegern, insbesondere Textilien
DE1060585B (de) * 1955-10-08 1959-07-02 Meulen Leonard V D Verfahren und Vorrichtung fuer die fortlaufende Anbringung von Doppelquerschweissnaehten und Trennstellen an mehrschichtigen Streifen aus thermoplastischem Material
DE1065794B (de) * 1955-10-21 1959-09-24 Fa. Dr.-Ing. Josef Ruhrmann, Stuttgart-Vaihingen Reißverschluß und Verfahren zu seiner Herstellung
US3103728A (en) * 1957-11-25 1963-09-17 Wahl Brothers Technique for assembling slide fasteners
FR1290989A (fr) * 1961-03-09 1962-04-20 Condemine S A R L Ets Procédé d'assemblage de pièces de tissu imperméabilisées par enduction
DE1144097B (de) * 1961-06-16 1963-02-21 Pfaff Plastic Ges Fuer Ind Tec Verfahren zum Herstellen einer nahtartigen Verbindung zwischen einzelnen Bahnen oder Zuschnitten aus duennem Papier, Faservlies od. dgl. sowie Vorrichtung zur Durchfuehrung des Verfahrens

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA514934A (en) * 1955-07-19 S. Bell Angus Textile operations and articles
US2018099A (en) * 1933-08-08 1935-10-22 Hookless Fastener Co Separable fastener
US2353960A (en) * 1942-03-24 1944-07-18 Ernest J King Sewed connection
US2497821A (en) * 1945-02-16 1950-02-14 United Carr Fastener Corp Slide fastener
DE1130263B (de) * 1955-02-12 1962-05-24 Messerschmitt Ag Verfahren zur Erzeugung einer Pseudodoppelsteppstichnaht und Maschine zur Durchfuehrung des Verfahrens
US2901803A (en) * 1955-06-29 1959-09-01 Opti Werk Gmbh & Co Slider for helical-wire slide fastener
US2994631A (en) * 1956-06-06 1961-08-01 Bemis Bro Bag Co Method of forming stitched end closures for paper bags
US3147529A (en) * 1960-05-09 1964-09-08 Walter Erich Heilmann Coil fastener
US3333305A (en) * 1965-11-01 1967-08-01 Scovill Manufacturing Co Terminal portions of plastic filament zippers

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3783476A (en) * 1971-10-13 1974-01-08 Opti Holding Ag Slide fastener stringer with stitched coupling element
US4187591A (en) * 1976-07-12 1980-02-12 Yoshida Kogyo K K Continuous slide fastener stringers
FR2390123A1 (fr) * 1977-05-10 1978-12-08 Yoshida Kogyo Kk Bande d'accouplement de fermeture a glissiere
NL7908807A (nl) * 1978-12-07 1980-06-10 Yoshida Kogyo Kk Ritssluitingdraagband.
FR2443222A1 (fr) * 1978-12-07 1980-07-04 Yoshida Kogyo Kk Bande a elements d'accouplement pour fermeture a glissiere et son procede de fabrication
US4321733A (en) * 1978-12-07 1982-03-30 Yoshida Kogyo K.K. Slide fastener stringer
US4319387A (en) * 1978-12-21 1982-03-16 Yoshida Kogyo, K.K. Slide fastener stringer
US5596793A (en) * 1995-02-21 1997-01-28 Davis; Gary T. Abrasion resistant slide fastener
US6314623B1 (en) * 1998-10-30 2001-11-13 Ykk Corporation Coil-type slide fastener
EP1005803A3 (en) * 1998-10-30 2001-01-17 Ykk Corporation Coil-type slide fastener
EP1005803A2 (en) * 1998-10-30 2000-06-07 Ykk Corporation Coil-type slide fastener
US6427294B1 (en) * 1999-04-30 2002-08-06 Ykk Corporation Waterproof slide fastener and manufacturing method thereof
US6516499B2 (en) * 1999-12-27 2003-02-11 Ykk Corporation Linear slide fastener and manufacturing method thereof
US20050257350A1 (en) * 2002-06-20 2005-11-24 Ykk Corporation Stop section for slide fastener, and slide fastener having such stop section
US7231697B2 (en) * 2002-06-20 2007-06-19 Ykk Corporation End stop for slide fastener and slide fastener having the same
US20040045140A1 (en) * 2002-09-09 2004-03-11 Morito Co., Ltd. Slide fastener
US20120110795A1 (en) * 2009-07-07 2012-05-10 Ykk Corporation Slide Fastener
US9015909B2 (en) * 2009-07-07 2015-04-28 Ykk Corporation Slide fastener
US20130174767A1 (en) * 2010-09-29 2013-07-11 Ykk Corporation Fastener Stringer Provided with Knit Tape
US10426232B2 (en) 2013-07-01 2019-10-01 Raw Ip Limited Zip fastener
US9986846B1 (en) 2013-10-11 2018-06-05 Ideal Fastener Corporation Slide fastener

Also Published As

Publication number Publication date
DE1289346B (de) 1969-02-13
AT291151B (de) 1971-07-12
DK124918B (da) 1972-12-11
BE703951A (xx) 1968-02-01
NL6712694A (xx) 1968-04-16
NO119295B (xx) 1970-04-27
SE309128B (xx) 1969-03-10

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